A former assistant at Florida International University, Dartmouth College and Alabama A&M University, Calhoun joins the Owls after spending the last four years at Vanderbilt, the last two as defensive quality control. He joined the Commodores staff in 2014 as a conditioning assistant.

Calhoun returned to collegiate athletics with the Commodores in 2014 after being a year assisting children with autism at the Piedmont School of Atlanta.

He served as FIU’s defensive line coach under Mario Cristobal at FIU from 2010-12, helping the Panthers to the 2010 Sun Belt Conference title and to their first two postseason appearances in school history, the 2010 Little Caesars Pizza Bowl and 2011 Beef `O' Brady's Bowl.

Prior to joining FIU, Calhoun coached four seasons at Dartmouth, working with the Big Green defensive line in 2006 and linebackers from 2007-09. From 2002-05, Calhoun served as defensive line coach at Alabama A&M. He helped fashion a unit that led the Southwestern Athletic Conference (SWAC) in total defense and sacks for four straight seasons. Eight of his players won All-SWAC honors, contributing to a 32-15 overall record.

During his time at Alabama A&M, Calhoun developed defensive end Robert Mathis into the 2002 SWAC Defensive the Player of the Year before embarking on a standout NFL career. In 13 seasons with the Indianapolis Colts, Mathis earned the 2013 AFC Defensive Player of the Year (while leading the league in sacks), was twice named All-Pro and was also named to the Pro Bowl six times.

He also coached FIU defensive end Tourek Williams,who selected in the sixth round of the 2013 draft by the San Diego Chargers and played a total of 45 games in his four-year career.

Calhoun was an all-conference defensive end at Grossmont (Calif.) Community College, and received his B.A. degree in health and physical education from Morehouse (Ga.) College in 1995.

He began his coaching career at Idaho State University in 1997, serving as the head strength and conditioning coach while assisting the defensive line coach. He returned to Morehouse in 1998, spending four seasons as defensive line coach. During the summers of 2004 and 2005, Calhoun held a defensive line internship with the San Diego Chargers through the NFL's Minority Internship Program. In 2008, he was an intern with the Philadelphia Eagles.